* {
    padding: 0;
    margin: 0;
  }
  
  html,
  body {
    height: 100%;
  }
  
  button {
    border: none;
    outline: none;
    cursor: pointer;
  }
  
  ul {
    list-style: none;
  }
  input{
      outline: none;
  }
  html{
    -webkit-user-select:none;/*webkit浏览器*/
    user-select:none;
    /* touch-action: none; */
  }
  